Kate Pentek, of Sayreville, was on stage taking her bows after a successful performance as Louise in Phoenix Production's performance of the musical Friday when suddenly, she spotted a familiar face in the audience.

Never did Kate expect to see her sister, U.S. Marine Keri Pentek, standing at the foot of the stage in her uniform and clutching a bouquet of flowers.

"I wanted to run off the stage," Kate told InsideEdition.com. "She showed up and I was floored. I was excited. I've never cried instantly like that before my whole life."

Kate said her sister, whom she calls her best friend, has been stationed away at 29 Palms in California for the past several months. They have only seen each other a handful of times in the past year.

"I asked her multiple times if she can get leave to come to the show," Kate said. "Every single time, she said, 'No, they won't let me, I'm really sorry.'"

But little did she know, Keri had something else in mind.

As Keri told her family she didn't have any time off, she was actually accumulating vacations days for this moment.